Spiced Lentils With Apple Crisps And Curried

• 4 granny smith apples
• 2 lemons
• 1 onion (yellow)
• 1 bay leaf
• 1 green lentils (dried)
• 1 apple crisps
• 1 banana
• 475 ml yogurt (plain)
• 475 ml chicken stock
• 16 ml canola oil